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  1. Y

    CH Pump Problem

    I think I'll repair and save the environment. Have you read the previous pages; was replaced 2 days ago.
  2. Y

    CH Pump Problem

    There is no other UK seller for this part. From ali express; is not going to be the original so inferior and won't last long so may be not worth it.
  3. Y

    CH Pump Problem

    Oh yes, moved to the house in 2002 and was there so 23 years plus and now had to be replaced. The new model UPS3 is much lighter.
  4. Y

    CH Pump Problem

    Impeller kit to replace ...
  5. Y

    CH Pump Problem

    I looked on you tube and there was a vid.
  6. Y

    CH Pump Problem

    I managed to remove the impeller, there is no blockage in the veins BUT the fan is not turning freely meaning the grinding noise I heard last time was working was when internal components got damaged?! photo below, it is repairable with new impeller from Ali express for under £40.
  7. Y

    CH Pump Problem

    I took off the 4 hex keys, what to look for?
  8. Y

    CH Pump Problem

    I emptied the header tank last week, is it a good idea to add 0.5L of the Sentinel x100 to the system? Guess taking off 0.5L or so water from header tank replacing it with the inhibitor will do the job?
  9. Y

    CH Pump Problem

    .
  10. Y

    CH Pump Problem

    I had 8 rads when moved in 2002 and all was fine but after ground floor extension became 12 rads had issues heating the rads in the extension, been balancing them and it's ok, kept same heat only boiler 18KW.
  11. Y

    CH Pump Problem

    Would an automatic bypass valve do a better job? it's suggested by @Johntheo5 in post #61 above.
  12. Y

    CH Pump Problem

    Yes I have kept the old, will dismantle may be in the weekend, will post photos. According the installer, implied it was dead, 240v was getting boiler kicking but nothing happening, will find out hopefully when dismantled.
  13. Y

    CH Pump Problem

    duh
  14. Y

    CH Pump Problem

    The installer told me I can have at any speed, I put it II for now as in pic.#
  15. Y

    CH Pump Problem

    SORTED!!! I called a local plumber today to replace the pump, I have already got the new Grandfus UPS3 15-60. He came turned heating on and straight away said it's the pump. Took him over 2 hours but stayed longer to see boiler firing , £100 very reasonable, couldn't do it myself. BUT After he...
  16. Y

    CH Pump Problem

    Not only that he turned the bypass valve fully on, luckily I was watching him and he didn't put where it was before; pls see my post #26 showing the photo of the bypass valve which is nearly shut.
  17. Y

    CH Pump Problem

    There was a purpose for this post: I booked a gas safe engineer yesterday morning; he said I need new boiler, new pump and power flush; total £3800 and spent time trying to convince me. I asked him to test the pump but was ignored.
  18. Y

    CH Pump Problem

    There is no other parts which can be faulty. The boiler fires only for 30 sec then stops for 30mins or so, the feed pipe from the boiler get very hot and return is cold, then the pump get very hot for no good reason. What else good it be, boiler?
  19. Y

    CH Pump Problem

    Yes I did few turns clockwise until stopped then anti clockwise until stopped.
  20. Y

    CH Pump Problem

    I turned both valves clock wise and anti clock wise with no issue, does this confirm valves are in working order?
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